Glenn Seaborg (1912-1999), the physicist who discovered plutonium and several other transuranic chemicals, is so far the only researcher to have lived to see an element named in his honour: seaborgium. Glenn Seaborg received the Nobel Prize for Chemistry in 1951. In the above image he is giving a lecture at a conference in the Universite d'Orsay, on the set of neutron captures required to create the transuranic elements, also known as actinides. Seaborgium is far beyond the heavier natural element, uranium, on the nuclei map. With 106 protons, it contains 14 more than uranium.